I opened it up and looked around. Nothing looked out of the ordinary,
except when I turned it on and let it sit for a second I saw some tiny
sparks next to the solder pad of a diode and then another just half way
THat is never a good sign...
I would look carfully in that area. Either something is breaking down
(maybe due to capacitor leakage) or a conection has opened up (dry joint)
and is sparking as a result.
-tony